The most important thing you can do is vibe. Thinking happy thoughts all by yourself will do more to change the world than a thousand invitations from the UN. And, that only makes sense if you think about great marketing for a terrible product.
Your contact with people is only as good as you yourself. If you are toxic, then you will be poison to anyone you come across. But, the smell of something sweet can carry through a breeze for miles. If you simply be a truly uplifting person, people will build a road through mountains to find you.